Can dendrimers be viewed as compact colloids? A simulation study of the fluctuations in a dendrimer of fourth generation
Can dendrimers be viewed as compact colloids? A simulation study of the fluctuations in a dendrimer of fourth generation
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DOI：
10.1063/1.1530577
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发表时间：
2003-01-22
影响因子：
4.4
通讯作者：
Ballauff, M
中科院分区：
文献类型：
--
作者：
Harreis, HM;Likos, CN;Ballauff, M
通过采用单体分辨蒙特卡罗模拟，我们分析了第四代模型树枝状大分子的构象，密度分布，相关函数和形状因子。我们发现，这些对象是聚合物链和紧凑的胶体颗粒之间的混合物，与单体的波动相关的键长的顺序的长度尺度，但实际上不相关的长度超过这个规模。我们讨论了这一发现的可能性的影响，树枝状聚合物作为“软胶体”，在散射实验中检测这些波动，并在小角度中子散射测量中获得的强度分布的反演。(C)2003年，美国物理学会。
By employing monomer-resolved Monte Carlo simulations, we analyze the conformations, density distributions, correlation functions, and the form factor of model dendrimers of fourth generation. We find that these objects are hybrids between polymer chains and compact colloidal particles, with the fluctuations of the monomers being correlated at length scales of the order of the bond length but practically uncorrelated for lengths exceeding this scale. We discuss the implications of this finding on the possibility of regarding dendrimers as "soft colloids," on the detection of these fluctuations in scattering experiments and on the inversion of intensity profiles obtained in small-angle neutron scattering measurements. (C) 2003 American Institute of Physics.